
n = int(input())
d = 10
maximum = 0
a = [0] * d
for i in range(n):
number = int(input())
while number != 0:
numpart = number % d
a[numpart] += 1
numpart = 0
number //= d
print(a)
maximum = max(a)
for i in reversed(range(d)):
if a[i] == maximum:
print(i, end=' ')